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- W2912124378 abstract "The electrochemical reduction of CO2 at ambient conditions provides a latent solution of turning waste greenhouse gases into commodity chemicals or fuels; however, a satisfactory ion-conducting membrane for maximizing the performance of a CO2 electrolyzer has not been developed. Here, we report the synthesis of a sequence of hydroxide-conductive polymer membranes, which are based on polymer composites of poly(vinyl alcohol)/Guar hydroxypropyltrimonium chloride, for use in CO2 electrolysis. The effect of different membrane functional groups, including thiophene, hydroxybenzyl, and dimethyloctanal, on the efficiency and selectivity of CO2 electroreduction to formate is thoroughly evaluated. The membrane incorporating thiophene groups exhibits the highest Faradaic efficiency of 71.5% at an applied potential of -1.64 V versus saturated calomel electrode (SCE) for formate. In comparison, membranes containing hydroxybenzyl and dimethyloctanal groups produced lower efficiencies of 67.6 and 68.6%, respectively, whereas the commercial Nafion 212 membrane was only 57.6% efficient. The improved efficiency and selectivity of membranes containing thiophene groups are attributed to a significantly increased hydroxide conductivity (0.105 S cm-1), excellent physicochemical properties, and the simultaneous attenuation of formate product crossover." @default.
- W2912124378 created "2019-02-21" @default.
- W2912124378 creator A5004307774 @default.
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- W2912124378 creator A5015102287 @default.
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- W2912124378 creator A5056662019 @default.
- W2912124378 date "2019-01-24" @default.
- W2912124378 modified "2023-10-13" @default.
- W2912124378 title "Promoter Effects of Functional Groups of Hydroxide-Conductive Membranes on Advanced CO<sub>2</sub> Electroreduction to Formate" @default.
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- W2912124378 doi "https://doi.org/10.1021/acsami.8b11845" @default.
- W2912124378 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30676728" @default.
- W2912124378 hasPublicationYear "2019" @default.
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